USRE27983E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Music synthesizer keyboard
Assignee: Fender Musical Instruments Corp
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Filing: 1972-08-07
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Granted: 1974-04-23
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Expires: 1992-08-07
Abstract
Abstract THE INVENTION CONCERNS A MUSICAL KEYBOARD FOR PROVIDING A TWO-VOICED OUTPUT FROM A MUSIC SYNTHEISIZER. THE SYSTEM INCLUDES A VOLTAGE DIVIDER WHICH PROVIDES A PLURALITY OF VALUES OF POTENTIAL AND A PLURALITY OF SWITCHES EACH CONNECTED TO A DIVIDER TAP AT A UNIQUE ONE OF THE POTENTIAL VALUES. THE SIMULTANEOUSLY CLOSURE OF A PLURALITY OF SWITCHES APPLIES THE SELECTED VOLTAGE TO A PAIR OF VOLTAGE-CONTROLLED OSCILLATORS SO AS TO PROVIDE A TWO-VOICED OUTPUT DETERMINED BY THE TWO SELECTED VOLTAGES HAVING THE GREATEST AND LEAST ABSOLUTE AMPLITUDE VALUES.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:52
CPC Classifications
G; G10; G10H; G10H5/00; G10H5/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-22 | 1977-10-22 | 1978-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-22 | 1981-10-22 | 1982-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-22 | 1985-10-22 | 1986-04-23 | $7700.00 | Window Closed / Lapsed |